/****************************************************************************
**
** Copyright (C) Qxt Foundation. Some rights reserved.
**
** This file is part of the QxtGui module of the Qxt library.
**
** This library is free software; you can redistribute it and/or modify it
** under the terms of the Common Public License, version 1.0, as published by
** IBM.
**
** This file is provided "AS IS", without WARRANTIES OR CONDITIONS OF ANY
** KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT LIMITATION, ANY
** WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, MERCHANTABILITY OR
** FITNESS FOR A PARTICULAR PURPOSE.
**
** You should have received a copy of the CPL along with this file.
** See the LICENSE file and the cpl1.0.txt file included with the source
** distribution for more information. If you did not receive a copy of the
** license, contact the Qxt Foundation.
**
** <http://libqxt.org>  <foundation@libqxt.org>
**
****************************************************************************/
#ifndef QXTSPANSLIDER_P_H
#define QXTSPANSLIDER_P_H

#include <QStyle>
#include <QObject>
#include "qxtspanslider.h"
#include "qxtpimpl.h"

class QStylePainter;
class QStyleOptionSlider;

class QxtSpanSliderPrivate : public QObject, public QxtPrivate<QxtSpanSlider>
{
    Q_OBJECT

public:
    friend class QxtSpanSlider;

    enum SpanHandle
    {
        NoHandle,
        LowerHandle,
        UpperHandle
    };

    QxtSpanSliderPrivate();
    void initStyleOption(QStyleOptionSlider* option, SpanHandle handle = UpperHandle) const;
    int pick(const QPoint& pt) const
    {
        return qxt_p().orientation() == Qt::Horizontal ? pt.x() : pt.y();
    }
    int pixelPosToRangeValue(int pos) const;
    void handleMousePress(const QPoint& pos, QStyle::SubControl& control, int value, SpanHandle handle);
    void drawHandle(QStylePainter* painter, SpanHandle handle) const;
    void setupPainter(QPainter* painter, Qt::Orientation orientation, qreal x1, qreal y1, qreal x2, qreal y2) const;
    void drawSpan(QStylePainter* painter, const QRect& rect) const;
    void triggerAction(QAbstractSlider::SliderAction action, bool main);
    void swapControls();

    int lower;
    int upper;
    int offset;
    int position;
    SpanHandle lastPressed;
    SpanHandle mainControl;
    QStyle::SubControl lowerPressed;
    QStyle::SubControl upperPressed;

public slots:
    void updateRange(int min, int max);
};

#endif // QXTSPANSLIDER_P_H
